たっち、しよっ！ ～Love Application～/ Touch, Shot! Love Application

The main character is an ordinary boy who attends a private school. One day, one piece of mail arrived. Inside the parcel of unknown sender was a black smartphone...

A piece of mail that arrived at a boy's house. The mail of unknown sender contained a smartphone equipped with a function to understand the destined person, a function to read the mind, and a function to embody delusions. It seems that he was selected as a test user of the smartphone model "yPhone", but when he started the smartphone with half confidence, four fateful girls were found at the initial startup.